Some pharmaceutical companies produce anorexigenic agent – Phentermine only in the form of white, crystalline powder. Then, Phentermine powder is supplied to factories of other pharmaceutical companies that make new pharmaceutical forms out of it.
Phentermine powder can be used to produce:
• Compressed tablets
• Chewable tablets
• Two-piece, hard capsules
In the middle of the last century, the sales of weight loss drugs containing only Phentermine anorexigenic agent were launched. Later, the FDA-approved drug, based on Phentermine and another anorexigenic agent – Fenfluramine went on sale.
Obese Americans are familiar with this combined weight loss drug under the famous abbreviation Fen-Phen. Several decades ago, Fen-Phen drug was recognized as unsafe for human health. Thus, the sales of Fen-Phen in the USA were stopped and only those drugs that contained nothing else but Phentermine were left on the market.
To produce weight loss drugs, three types of Phentermine are used:
• Phentermine base
• Phentermine as Hydrochloride (HCl)
• Phentermine as ion-exchange resin complex
Phentermine base is used in the production of readymade pharmaceutical forms rarely. Phentermine Hydrochloride is used in the production of compressed tablets, while Phentermine resin complex is used to produce weight loss capsules.
In the USA, several pharmaceutical companies are registered and they produce Phentermine, yet they do not have the U.S. marketing authorization for Phentermine-containing drugs.
Siegfried is one of many manufacturers of Phentermine anorectic agent in the USA. Siegfried is indicated as a producer and supplier of Phentermine HCl and Phentermine base in the USA and Switzerland.
You will find no information on what companies use Phentermine by Siegfried to produce the readymade pharmaceutical forms.
It is noteworthy that in 2008, Siegfried sold one of its manufacturing facilities to Arena Pharmaceuticals (Biopharmaceutical Company).
In 2015, Arena Pharma is famous by that it supplies a new weight loss drug – Lorcaserin to the U.S. market. In the USA, this drug is registered under the brand – Belviq.
The same as Phentermine, Belviq (Lorcaserin) is used to reduce the appetite. You may find more information on similarities and differences between Belviq and Phentermine in one of the upcoming reviews. If you have never used Phentermine and Belviq, you can leave your feedbacks about these drugs right now.